Materials are inputs to production[?] or manufacturing. They are often raw - that is unprocessed, but are sometimes processed before being used in more advanced production processes. In general, in technologically advanced societies, the materials are not finished consumer goods.
... (http://www.constitutional-law.net/general.html) by Professor Joseph E. Magnet, University of Ottawa
Bibliography
Hogg, P. W., Constitutional law of Canada 4th ...